But the EF86 part doesn't have a contribution to the total. I doubt it is noiseless. I think I see why as the part is a .subckt who's behavior is defined by equations rather than a true model where you can set params such Af and Kf (flicker noise).

Assuming I put an EF86 in a test circuit and measure the noise behavior, in what manner could I add this to the EF86 .subckt?